CN205745410U - Full welding smithwelding ball valve - Google Patents
Full welding smithwelding ball valve Download PDFInfo
- Publication number
- CN205745410U CN205745410U CN201620447034.XU CN201620447034U CN205745410U CN 205745410 U CN205745410 U CN 205745410U CN 201620447034 U CN201620447034 U CN 201620447034U CN 205745410 U CN205745410 U CN 205745410U
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- valve
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- valve seat
- valve body
- sealing ring
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Abstract
This utility model relates to a kind of full welding smithwelding ball valve, including valve body, valve seat, spheroid, valve rod, drive mechanism, valve seat is embedded in ptfe plastic sealing ring；Mainly being shaped with ring-shaped step outside ptfe plastic sealing ring sealing surface, the circular table of this ring-shaped step press-fits an annular compression ring, annular compression ring is fixedly mounted on valve seat by screw；Being shaped with greasing seal groove on valve seat inside ptfe plastic sealing ring, this greasing seal groove connects by controlling device with the greasing on valve body outside the O RunddichtringO on valve seat.Ptfe plastic sealing ring is arranged in the mounting groove of valve seat by annular compression ring, and life-time service is difficult to loosen after shrinking, and does not more have and drops out phenomenon, and sealing property is reliable, service life is long.It is applicable to Gao Long-distance Transmission Pipeline ball valve.
Description
Technical field
This utility model belongs to valve field, specifically about a kind of ball valve.This utility model is applicable to
Gao Long-distance Transmission Pipeline ball valve.
Background technology
All-welded ball valve is commonly used to natural gas line control valve, owing to using environment the most in the wild or buried
On pipeline, on pipeline, the life-span to valve typically requires to reach 30 years, thus valve require have non-maintaining,
The performances such as long-life.Natural gas line ball valve is typically by valve body, valve seat, spheroid, valve rod, drive mechanism group
Become.Valve body typically uses all-welded structure, to prevent medium from leaking；Because natural gas line medium temperature is not
Height, uses ptfe plastic sealing ring and spheroid to cooperate composition sealing pair, to improve so general on valve seat
Sealing property.Its major defect be ptfe plastic sealing ring be to be inlaid in the mounting groove on valve seat, during use
Between long after, the contractility of ptfe plastic material so that ptfe plastic sealing ring is installed with valve seat after shrinking
Groove produces fit clearance, reduces the sealing matching property of ptfe plastic sealing ring and spheroid, even makes tetrafluoro mould
Material sealing ring drops out in valve seat mounting groove, and service life is short.
Summary of the invention
The purpose of this utility model is the shortcoming existed for prior art, it is provided that a kind of sealing property is reliable,
Service life length full welding smithwelding ball valve.
The technical solution of the utility model includes valve body, valve seat, spheroid, valve rod, drive mechanism, valve body by
Left valve barrel, middle valve body, right valve barrel form, and left valve barrel and right valve barrel are respectively welded at the left and right sides of middle valve body,
Using between left valve barrel and right valve barrel and pipeline and be welded to connect, valve seat is embedded in ptfe plastic sealing ring, these are four years old
Fluoroplastic seal ring is inlaid in the mounting groove on valve seat, and its sealing surface coordinates composition sealing pair, valve with spheroid
Seat is made up of large diameter circle and minor diameter annulus two parts, the radial direction periphery of its minor diameter annulus and valve body
Piston type fit structure, between the two mounting O-shaped sealing ring is used, in large-diameter circular between passage inner round wall
Spring is installed between ring and the annular convex shoulder of minor diameter annulus junction and valve body spring cavity；Mainly tetrafluoro is moulded
It is shaped with ring-shaped step outside material sealing ring sealing surface, the circular table of this ring-shaped step press-fits an annular compression ring,
Annular compression ring is fixedly mounted on valve seat by screw；It is shaped with greasing on valve seat inside ptfe plastic sealing ring
Seal groove, this greasing seal groove is by controlling device with the greasing on valve body outside the O RunddichtringO on valve seat
Connection.
Preferably, between left valve barrel, right valve barrel and the connecting end surface of middle valve body, it is formed respectively with several holes, location,
Alignment pin is installed in hole, each location.
The utility model has the advantages that ptfe plastic sealing ring is arranged in the mounting groove of valve seat by annular compression ring,
Life-time service is difficult to loosen after shrinking, and does not more have and drops out phenomenon, and sealing property is reliable, service life is long.
Accompanying drawing explanation
Fig. 1 is structural representation of the present utility model.
Fig. 2 is partial structurtes enlarged drawing at I in this utility model Fig. 1.
1 left valve barrel, valve body in 2,3 spheroids, 4 valve seats, 5 right valve barrels, 6 alignment pins, 7 valve rods, 8 pass
Motivation structure, 9 ptfe plastic sealing rings, 10 annular compression rings, 11 springs, 12O RunddichtringO, 13 greasings are close
Sealing groove.
Detailed description of the invention
Full welding smithwelding ball valve as shown in Figure 1, including valve body, valve seat 4, spheroid 3, valve rod 7, transmission
Mechanism 8, valve body is made up of left valve barrel 1, middle valve body 2, right valve barrel 5, and left valve barrel 1 and right valve barrel 5 are respectively
It is welded on the left and right sides of middle valve body 2, uses between left valve barrel 1 and right valve barrel 5 and pipeline and be welded to connect,
To make valve body be all-welded structure, it is to avoid valve flange connects the leakage point existed, and valve seat 4 is embedded in tetrafluoro
Plastic seal ring 9, this ptfe plastic sealing ring 9 is inlaid in the mounting groove on valve seat 4, its sealing surface and ball
Body 3 coordinates composition sealing pair, and valve seat 4 is made up of large diameter circle and minor diameter annulus two parts, and it is little directly
Use piston type fit structure between radial direction periphery and the valve channel inner round wall of footpath annulus, pacify between the two
Dress O RunddichtringO 12, it is achieved the sealing between valve seat 4 and valve body, at large diameter circle and minor diameter annulus
Between annular convex shoulder and the valve body spring cavity of junction install spring 11, make valve seat 4 can axial float, described
Large diameter circle and the minor diameter annulus i.e. external cylindrical surface of valve seat 4 is made up of two sections of different-diameter cylinders；Tetrafluoro
It is shaped with ring-shaped step outside plastic seal ring 9 sealing surface, the circular table of this ring-shaped step press-fits an annular
Pressure ring 10, annular compression ring 10 is fixedly mounted on valve seat 4 by screw, prevents ptfe plastic sealing ring 9 from shrinking
Loosen afterwards or drop out in the mounting groove of valve seat 4；It is shaped with on valve seat 4 inside ptfe plastic sealing ring 9
Greasing seal groove 13, this greasing seal groove 13 by outside the O RunddichtringO 12 on valve seat 4 with on valve body
Greasing control device connection, carry out greasing when valve closing, make between spheroid 3 and valve seat 4 increase by one
Road grease seal, as shown in Figure 2.Refer to inside described ptfe plastic sealing ring 9 near valve seat 4 centrage
Side, refers to the side of sealing surface on valve seat 4 outside described O RunddichtringO 12.
Several holes, location it are formed respectively with, often between left valve barrel 1, right valve barrel 5 and the connecting end surface of middle valve body 2
Installing alignment pin 6 in hole, individual location, after keeping left valve barrel 1, right valve barrel 5, middle valve body 2 to weld, passage is same
Heart degree.
Claims (2)
1. a full welding smithwelding ball valve, including valve body, valve seat (4), spheroid (3), valve rod (7), transmission
Mechanism (8), valve body is made up of left valve barrel (1), middle valve body (2), right valve barrel (5), left valve barrel (1) and right valve barrel
(5) it is respectively welded at the left and right sides of middle valve body (2), uses between left valve barrel (1) and right valve barrel (5) and pipeline
Being welded to connect, valve seat (4) upper setting-in ptfe plastic sealing ring (9), this ptfe plastic sealing ring (9) is inlaid in valve
In mounting groove on seat (4), its sealing surface coordinates composition sealing pair with spheroid (3), and valve seat (4) is by large-diameter circular
Ring and minor diameter annulus two parts composition, the radial direction periphery of its minor diameter annulus and valve channel inner round wall it
Between use piston type fit structure, between the two mounting O-shaped sealing ring (12), large diameter circle with little directly
Spring (11) is installed between annular convex shoulder and the valve body spring cavity of annulus junction, footpath；It is characterized in that ptfe plastic
It is shaped with ring-shaped step outside sealing ring (9) sealing surface, the circular table of this ring-shaped step press-fits an annular compression ring
(10), annular compression ring (10) is fixedly mounted on valve seat (4) by screw；In ptfe plastic sealing ring (9) inner side
Valve seat (4) on be shaped with greasing seal groove (13), this greasing seal groove (13) is close by the O type on valve seat (4)
Seal (12) outside controls device with the greasing on valve body and connects.
Full welding smithwelding ball valve the most according to claim 1, is characterized in that left valve barrel (1), right valve barrel
(5) and being formed respectively with several holes, location between the connecting end surface of middle valve body (2), it is fixed to install in hole, each location
Position pin (6).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620447034.XU CN205745410U (en) | 2016-05-10 | 2016-05-10 | Full welding smithwelding ball valve |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620447034.XU CN205745410U (en) | 2016-05-10 | 2016-05-10 | Full welding smithwelding ball valve |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN205745410U true CN205745410U (en) | 2016-11-30 |
Family
ID=57363542
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201620447034.XU Active CN205745410U (en) | 2016-05-10 | 2016-05-10 | Full welding smithwelding ball valve |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN205745410U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107676520A (en) * | 2017-09-18 | 2018-02-09 | 江苏诚功阀门科技有限公司 | Full welded pipeline ball valve body and its assemble welding technique |
-
2016
- 2016-05-10 CN CN201620447034.XU patent/CN205745410U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107676520A (en) * | 2017-09-18 | 2018-02-09 | 江苏诚功阀门科技有限公司 | Full welded pipeline ball valve body and its assemble welding technique |
| CN107676520B (en) * | 2017-09-18 | 2019-04-09 | 江苏诚功阀门科技有限公司 | Full welded pipeline ball valve body and its assemble welding technique |
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|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant |